09月数学试题讨论稿第五篇（129--153）
<p> 129. 4-4平方分之一</p><p> <span word="SA">SA</span>: 15/16</p><p> 129.</p><p> 129题可能是<span word="GWD">GWD</span>13-8</p><p> <span word="At">At</span> <span word="a">a</span> <span word="certain">certain</span> <span word="food">food</span> <span word="stand">stand</span>, <span word="the">the</span> <span word="price">price</span> <span word="of">of</span> <span word="each">each</span> <span word="apple">apple</span> <span word="is">is</span> ￠ 40 <span word="and">and</span> <span word="the">the</span> <span word="price">price</span> <span word="of">of</span> <span word="each">each</span> <span word="orange">orange</span> <span word="is">is</span> ￠ 60.</p><p> <span word="Mary">Mary</span> <span word="selects">selects</span> <span word="a">a</span> <span word="total">total</span> <span word="of">of</span> 10 <span word="apples">apples</span> <span word="and">and</span> <span word="oranges">oranges</span> <span word="from">from</span> <span word="the">the</span> <span word="food">food</span> <span word="stand">stand</span>, <span word="and">and</span> <span word="the">the</span> <span word="average">average</span></p><p> <span word="price">price</span> <span word="of">of</span> <span word="the">the</span> 10 <span word="pieces">pieces</span> <span word="of">of</span> <span word="fruit">fruit</span> <span word="is">is</span> ￠ 56. <span word="How">How</span> <span word="many">many</span> <span word="oranges">oranges</span> <span word="must">must</span> <span word="Mary">Mary</span> <span word="put">put</span> <span word="back">back</span> <span word="so">so</span> <span word="that">that</span> <span word="the">the</span> <span word="average">average</span> <span word="price">price</span> <span word="of">of</span> <span word="the">the</span> <span word="pieces">pieces</span> <span word="of">of</span> <span word="fruit">fruit</span> <span word="that">that</span> <span word="she">she</span> <span word="keeps">keeps</span> <span word="is">is</span> ￠ 52?</p><p> <span word="A">A</span>. 1</p><p> <span word="B">B</span>. 2</p><p> <span word="C">C</span>. 3</p><p> <span word="D">D</span>. 4</p><p> <span word="E">E</span>. 5</p><p> <span word="The">The</span> <span word="answer">answer</span> <span word="is">is</span> <span word="E">E</span></p><p> 130. <span word="DS">DS</span>:一串数列求标准差:</p><p> 最大数等于平均数</p><p> <span word="range">range</span>为零</p><p> <span word="SA">SA</span>:<span word="D">D</span> 大家帮我确认一下</p><p> 131. 一个卫星绕木星 卫星离木星的地心5800哩 卫星离木星的表面3700哩</p><p> 求木星圆周长?</p><p> <span word="SA">SA</span>:4200 <span word="PAI">PAI</span></p><p> 132. 又是委员会问题^^:</p><p> <span word="a">a</span>有五人 <span word="b">b</span>有四人 <span word="c">c</span>有三人</p><p> <span word="ab">ab</span>个各取两人 <span word="c">c</span>取一人的取法有几种??</p><p> <span word="SA">SA</span>: 180</p><p> 133.<span word="DS">DS</span>:</p><p> <span word="xy">xy</span>+<span word="z">z</span>=<span word="z">z</span>, <span word="Ix">Ix</span>-<span word="yI">yI</span>0? <span word="x">x</span>-<span word="y">y</span>的绝对值是否大于零</p><p> 1. <span word="x">x</span>不=0</p><p> 2. <span word="y">y</span>=0</p><p> <span word="SA">SA</span>:<span word="A">A</span></p><p> 134. <span word="x">x</span>^2-6<span word="xy">xy</span>+9<span word="y">y</span>^2-14=0</p>
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